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arXiv · 1205.0365

Switching off the magnetic exchange coupling by quantum resonances

Ching-Hao Chang·Tzay-Ming Hong
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Abstract

We clarify the role of quantum-well states in magnetic trilayer systems from majority carrier in the ferromagnetic and all carriers in the antiferromagnetic configurations. In addition to numerical and analytic calculations, heuristic pictures are provided to explain effects of a capping layer and side-layer modulation in recent experiments. This immediately offers answers to two unexplained subtle findings in experiments and band-structure calculations, individually. Furthermore, it allows a more flexible tuning of or even turning off the interlayer exchange coupling.

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Ching-Hao Chang, Tzay-Ming Hong. 2012-05-03. Switching off the magnetic exchange coupling by quantum resonances. https://doi.org/10.1103/physrevb.85.214415

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